Uniqueness of glasses prepared via x-ray induced yielding

The yield point marks the beginning of plastic deformation for a solid subjected to sufficient stress, but it can alternatively be reached by x-ray irradiation. We characterize this latter route in terms of thermodynamics, structure and dynamics for a series of GeSe<sub>3</sub>chalcogenide glasses with different amount of disorder. We show that a sufficiently long irradiation at room temperature results in a stationary and unique yielding state, independent of the initial state of the glass. The glass at yield is more disordered and has higher enthalpy than the annealed glass, but its properties are not extreme: they rather match those of a glass instantaneously quenched from a temperature 20% higher than the glass-transition temperature. This is a well-known, key temperature for glass-forming liquids which marks the location of a dynamical transition, and it is remarkable that different glasses upon irradiation head all there.

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Publication Details

Journal
Reports on Progress in Physics
Published
2024-11-13
DOI
https://doi.org/10.1088/1361-6633/ad91df
Citations
3
Primary Topic
Phase-change materials and chalcogenides
Type
article
Field-Weighted Citation Impact
0.35

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article

Uniqueness of glasses prepared via x-ray induced yielding

G. Monaco, Gerhard Gruebel, Michael Sprung, Francesco Dallari et al.
3 citations
Reports on Progress in Physics
Phase-change materials and chalcogenides
0.35
article

Uniqueness of glasses prepared via x-ray induced yielding

G. Monaco, Gerhard Gruebel, Michael Sprung, Francesco Dallari, Peihao Sun, Alessandro Martinelli, Fabian Westermeier, Jacopo Baglioni
article en
3 citations

Abstract

The yield point marks the beginning of plastic deformation for a solid subjected to sufficient stress, but it can alternatively be reached by x-ray irradiation. We characterize this latter route in terms of thermodynamics, structure and dynamics for a series of GeSe<sub>3</sub>chalcogenide glasses with different amount of disorder. We show that a sufficiently long irradiation at room temperature results in a stationary and unique yielding state, independent of the initial state of the glass. The glass at yield is more disordered and has higher enthalpy than the annealed glass, but its properties are not extreme: they rather match those of a glass instantaneously quenched from a temperature 20% higher than the glass-transition temperature. This is a well-known, key temperature for glass-forming liquids which marks the location of a dynamical transition, and it is remarkable that different glasses upon irradiation head all there.

Reports on Progress in PhysicsVol. 87(12)
University of Padua (IT), Istituto Nazionale di Fisica Nucleare, Galileo Galilei Institute for Theoretical Physics (IT), Deutsches Elektronen-Synchrotron DESY (DE), Istituto Nazionale di Fisica Nucleare, Sezione di Padova (IT), Laboratoire Charles Coulomb (FR), European X-Ray Free-Electron Laser (DE)
European Commission, Deutsches Elektronen-Synchrotron
Openalex Percentile: Top 43%
Phase-change materials and chalcogenides
0.35
DOIOpen Access PDFOpenAlex
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Uniqueness of glasses prepared via x-ray induced yielding — G. Monaco, Gerhard Gruebel, et al. · Reports on Progress in Physics (2024) | TGRS Research Map | TGRS